Reference

zpool-prefetch(8)

Loads specific types of data for the given pool

NAME

zpool-prefetch – Loads specific types of data for the given pool

SYNOPSIS

zpool prefetch -t type pool

DESCRIPTION

zpool prefetch -t ddt pool Prefetch data of a specific type for the given pool; specifically the DDT, which will improve write I/O performance when the DDT is resident in the ARC.